Lin Mo, the protagonist of "Double Life", is like a coin suspended on the moral scale. He is known as a good-hearted "good old man" in the neighborhood. He builds a nest for stray cats with a gentle smile, and speaks up for interns at company meetings. But when he turns around, he is in a blind spot where no one is monitoring him. He uses carefully calculated words to push his opponents into the professional abyss. Behind the champagne tower at a charity dinner, he exchanges glances with the middlemen of gray transactions. In order to desire "sex", he had countless physical transactions with the lady sitting on the stage. When he wiped the stains on his tie in front of the mirror late at night, the mirror reflected two overlapping faces - one full of wrinkles of compassion, and the other with a greedy smile. As the gap in his identity gradually widens, the story reveals the absurd truth of the urban jungle: Are we all supporting another self in the shadow while playing the role of light? When society alienates "personality" into survival armor, which side will the coin ultimately fall on?